Sound-record.



110.785.317. PATENTED MAR.21 .1905. G. A. MANWARING, v. H; EMERSON, F.L. GAPPSV & B. 3., NORTON.

SOUND RECORD.

APPLICATION. FILED b014, 1904.

' llllllillll W lill I I. l myh M/ WEEK/2 No. 785,317. Patented March21, 1905.

GEORGE ABBOTT IWANWABINGQ or BAYONNE. AND; VICTOR I EMERSON, OF NEWARK,NEW JERSEY, ,FR'ANK L. oiirrs, OF LONDON, ENGLAND, AND EUGENE E; NORTON,o NIoHoLs, CONNECTICUT, ASSIGNQRS'TO AMEEIoANeEAPHoPHoNE COMPANY, OFBRIDGEPORT, CONNECTICUT,

A CORPORATION Orv-WEST VIRGINIA. v I

.souND-R'EcoRo;

SPECIFICATION forming part of Letters Patent No. 7 5,317, dated March21, 1.905. f 7, Original application filed April 14, 190 ,Se1ia1 No.203,233. Divided and this application filed etcber.,1904. Serial No.227,170;

T9 71171707771 it m y l'tcerrtk j I siredythe bore of cylinder'A may beslightly Be it known that we, GEOEGEABEOTT MAN- tapered to facilitatesubsequent removal of WARING, of Bayonne, Hudson countyQand V1otheelectroplate'. The cylinder is caused to re- TOR H. EMERSON, of Newark,Essex county, volve, and the recording device is caused to NewJersey,FRANKL. (JAP1 s,refsidingin Lonprogress longitudinally Within the{cylinder don, England, and EUGEN 'EJNOR'TO of by any suitablemechanism; The mere-pro- 2* Nichols, Fairfield county; Connecticut, allcitiduction of an original sound-recordupon-"the Zens of theUnitedStatesg h'ave invented a new internal surface of a hollow cylinderisn'ot'in and useful Improvement i-nso'und-Records, itself-Knew and :maybe accomplished by any IO which is fully set forth in the followingspeci, desirable means. This original sound-record 5 5 fieation. iselectroplated (as in a bath 0 in the usual ()ur invention relates to theproduction of mannerlto secure the electroplate D, depositmetalliccylindrical sound-records which are ed upon the record-surface withinthebore of primarily intended for use in nurling comthe cylinder A. ThiselectroplateD will pref- I 5 mercial sound-records, but which may beused erably be backed up by a strengthening-core for other purposes. D,which may be of any desirable material The present application is adivision of our and may be secured to the cylinder D in any pendingapplication, Serial N 0. 203,233, filed convenient manner. Theelectroplate,with its April 14:, 1904. In that application we debacking,is then removed from the cylinderA 2 scribed and claimed the method ofproducing and is ready for use. This electroplated cyl- 5 commercialsound-recordsinquantities, which, inder D is an integral and continuous(seam- -in brief, consists in first making an original less) unitaryarticle, having the sound-record sound-record upon the inner wall orbore of a proper formed in reverse upon its external hollow cylinder,next depositing an electrosurface and having no longitudinal ridge or 5plate upon this interior surface, and finally fin to mar itsrecord-surface. removing this electroplated cylinder from the We areaware that metallic record-cylinders original record, after which thismetal record have been proposed heretofore; but our meis ready fornurling or other use. tallic record differs from them, as will now Inthe accompanying drawings, Figure l is be pointed out. Such records havesome- 3 a longitudinal sectional View representing the times been madeby direct mechanical action, formation of the original record upon theinthe recording-stylus operating (in more or terior of a cylinder. Fig.2 is a similar repless ineffective fashion) to cut or gouge outresentation of the cylinder while in a platingthe material upon theexternal surface of the bath, and Fig. 3 is a perspective of a metallicmetallic cylinder. Owing to the comparative 3 5 sound-record forming thesubject-matter of feebleness of the sound-waves and the comthe presentapplication. parative hardness of metal the record proper.

A represents a hollow cylinder composed of 2'. 6., the actual cuts orgouges is shallow suitable material, which for convenience may (wheremade) and is an inaccurate represenbe designated wax or wax-like, beingof tation of the path of the recording-stylus. 4 any substance, suitablefor making original In short, such records are impracticable and 5sound-records. worthless. Our new metallic record differs B represents arecording device which confrom these in that, first, it is ofelectrodetains a diaphragm and a recording stylus posited metal; second,having the record in acted upon by sound-waves through a tube 6 reverse,and, third, in that it corresponds truly 45 according to well-knownprinciples. If deand accurately with the original sound waves. 9

Metallic record-cylinders have also been formed by electroplating uponthe exterior of an original record-cylinder; butin this case the recordproper is found upon the interior of the metal cylinder-that is, Withinits b0reand sometimes such tubular metal records have been cut throughlongitudinally and flattened out or even rolled up in such manner as topresent the record upon the exterior of the cylinder thus formed; but inthe latter case the cylinder will present a seam Where the two edgeshave been joined. Our new metallic record differs from these articles inpresenting the record upon its exterior and in being seamless. Thepresence of theseam, it is needless to say, renders the recordabsolutely worthless either for direct audible regroduction or fornurling commercial recor s.

Metallic record-cylinders have also been formed by electroplating with adiflFerent metal .upon the inner surface of the metallic cylindersreferred to in the preceding paragraph and then removing the latter bythe action of acid. The records thus formed are not in reverse and aretherefore 'unfitted for nurling, since the knurled records would haveridges instead of grooves and could not be employed In testimony whereofwe have signed this 4 specification in the presence of the subscribingWitnesses.

V GEORGE ABBOTT MANWARING.

VICTOR H. EMERSON. FRANK L. CAPPS.

EUGENE E. NORTON.

Witnesses for Manwaring and Emerson:

DANIEL SULLIVAN, WM. HACKLAND.

Witnesses for Capps:

R. WESTACOTT, A. NUTTING.

Witnesses for Norton:

Jim. R. PETRIE, J. B. BOLLING.

